<template>
  <view v-if="goods_info.goods_name" class="view-dateil-container">
    <!-- 轮播图区域 -->
    <swiper :indicator-dots="true" :autoplay="true" :interval="3000" :duration="1000" :circular="true">
      <swiper-item v-for="item,i in goods_info.pics" :key="i">
        <image :src="item.pics_big" mode="" @click="preview(i)"></image>
      </swiper-item>

    </swiper>
    <!-- 轮播图区域结束 -->

    <!-- 商品信息区域 -->
    <view class="goods-info-box">
      <!-- 价格 -->
      <view class="goods-info-pirce">

        ￥{{goods_info.goods_price}}
      </view>
      <view class="goods-info-body">
        <view class="goods-info-name">
          {{goods_info.goods_name}}
        </view>
        <view class="favi">
          <uni-icons type="star" size="18" color="gray"></uni-icons>
          <text>收藏</text>
        </view>
      </view>
      <view class="yf">
        快递：免运费
      </view>
    </view>
    <!-- 商品信息区域结束 -->
    <!-- 商品详情信息 -->
    <rich-text :nodes="goods_info.goods_introduce"></rich-text>
    <!-- 商品详情信息结束 -->

    <!-- 底部商品导航组件 -->
    <view class="goods_nav">
      <uni-goods-nav :fill="true" :options="options" :buttonGroup="buttonGroup" @click="onClick"
        @buttonClick="buttonClick" />
    </view>
  </view>
</template>

<script>
  import {
    mapState,
    mapMutations,
    mapGetters
  } from 'vuex'
  export default {
    data() {
      return {
        goods_info: {},
        options: [{
          icon: 'headphones',
          text: '客服'
        }, {
          icon: 'shop',
          text: '店铺',
          infoColor: "red"
        }, {
          icon: 'cart',
          text: '购物车',
          info: 0
        }],
        buttonGroup: [{
            text: '加入购物车',
            backgroundColor: '#FF4536',
            color: '#fff'
          },
          {
            text: '立即购买',
            backgroundColor: '#FF7C24',
            color: '#fff'
          }
        ]
      };
    },
    onLoad(options) {
      console.log(options)
      const goods_id = options.goods_id
      this.getGoodsDateil(goods_id)
    },
    computed: {
      ...mapState('m_cart', []),
      ...mapGetters('m_cart', ['total']),
    },
    watch: {
      // 使用普通函数的形式定义的 watch 侦听器，在页面首次加载后不会被调用。因此导致了商品详情页在首次加载完毕之后，不会将商品的总数量显示到商品
      // total(newVal){
      //   const findResult=this.options.find(x=>x.text==='购物车')
      //   console.log(findResult)
      //   if(findResult){
      //     findResult.info=newVal
      //   }
      // }
      // 为了防止这个上述问题，可以使用对象的形式来定义
      total:{
         handler(newVal){
            const findResult=this.options.find(x=>x.text==='购物车')
            console.log(findResult)
            if(findResult){
              findResult.info=newVal
            }
          },
          immediate:true
      }
    },
    methods: {
      ...mapMutations('m_cart', ['addToCart']),
      
      // 获取商品详情的信息
      async getGoodsDateil(goods_id) {
        const {
          data: res
        } = await uni.$http.get('/api/public/v1/goods/detail', {
          goods_id
        })
        if (res.meta.status !== 200) return uni.$showMsg()
        res.message.goods_introduce = res.message.goods_introduce.replace(/<img /g, '<img style="display:block;"')
          .replace(/webp/g, 'jpg')
        this.goods_info = res.message
      },
      preview(i) {
        uni.previewImage({
          current: i,
          urls: this.goods_info.pics.map(x => x.pics_big)
        })
      },
      // 跳转到购物车
      onClick(e) {
        console.log(e.content.text)
        if (e.content.text === '购物车') {
          uni.switchTab({
            url: '../../pages/cart/cart'
          })
        }
      },
      // 加入购物车
      buttonClick(e) {
        console.log(e.content.text)
        if (e.content.text === '加入购物车') {
          const goods = {
            goods_id: this.goods_info.goods_id,
            goods_name: this.goods_info.goods_name,
            goods_price: this.goods_info.goods_price,
            goods_count: 1,
            goods_small_logo: this.goods_info.goods_mall_logo,
            goods_state: true,
          }
          this.addToCart(goods)
        }

      }
    }
  }
</script>

<style lang="scss">
  page {
    width: 100vw;
    height: 100vh;
  }

  swiper {

    height: 750rpx;

    swiper-item {


      image {
        width: 100%;
        height: 100%;
      }
    }
  }

  .goods-info-box {
    padding: 10px;
    padding-right: 0;
    display: flex;
    flex-direction: column;

    .goods-info-pirce {
      color: #FF4536;
      font-size: 32rpx;
      font-weight: bold;
      padding: 10rpx 0;

    }

    .goods-info-body {
      display: flex;
      justify-content: center;
      align-items: center;

      .goods-info-name {
        flex: 1;
        line-height: 40rpx;
        font-size: 24rpx;
        padding-right: 20rpx;
      }

      .favi {
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        width: 120rpx;
        border-left: 2rpx solid #A5A4A4;

        text {
          font-size: 24rpx;

        }
      }
    }

    .yf {
      font-size: 24rpx;
      color: #808080;
      padding: 10rpx 0;
    }
  }

  .goods_nav {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    z-index: 999;
  }

  .view-dateil-container {
    padding-bottom: 50px;
  }
</style>
